环境工程学报2026，Vol.20Issue(8)：2621-2633,13.DOI:10.12030/j.cjee.202601072
园林废弃物资源化利用路径的碳足迹比较研究
Comparative analysis of carbon footprints of garden waste resource utilization pathways
摘要
Abstract
With increasingly stringent requirements for integrated municipal solid waste management,garden waste has become an important component of urban solid waste streams.However,quantitative evaluations of carbon emissions from garden waste resource utilization remain limited,and comparisons among different utilization pathways are often hindered by inconsistent system boundaries and functional units.In this study,a unified carbon footprint accounting framework was established to quantitatively compare three typical garden waste utilization pathways:energy recovery,composting,and material utilization.The results showed that,for the treatment of 1 t of wet garden waste,the energy recovery pathway had the lowest carbon footprint,at 41.53 kgCO2e,whereas the carbon footprints of the composting and material utilization pathways were 100.33 and 102.31 kgCO2e,respectively.Contribution analysis indicated that electricity consumption was the dominant source of emissions in the energy recovery and material utilization pathways,with pelletizing,sterilization,and drying identified as the main contributing processes.In contrast,emissions from the composting pathway were primarily associated with greenhouse gas releases during aerobic fermentation.Sensitivity analysis further showed that electricity consumption was the key factor affecting the carbon footprints of the energy recovery and material utilization pathways,whereas diesel consumption and packaging inputs had greater influence in the composting pathway.The scenario simulation results indicated that the coordinated implementation of low-carbon measures,including clean electricity,low-carbon transportation,and packaging recycling,could reduce the carbon footprint of the garden waste resource utilization system by 55.6%.These findings provide quantitative evidence for optimizing garden waste utilization pathways and support low-carbon decision-making in urban landscape management.关键词
园林废弃物/碳足迹/资源化利用/碳减排潜力/路径比较Key words
garden waste/carbon footprint/resource utilization/carbon reduction potential/pathway comparison分类
资源环境引用本文复制引用
段纪瀚,周世豪,乔毅豪,朱虹,王懿祥,史琰..园林废弃物资源化利用路径的碳足迹比较研究[J].环境工程学报,2026,20(8):2621-2633,13.基金项目
浙江省住建厅建设科研资助项目(2024K089) （2024K089）
浙江省自然科学基金资助项目(Y19C160025) （Y19C160025）
